本文介绍了在轴上显示正确的值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有这个 Data.Frame (mydf):
年总数1999 39672002 5802005 52032008 2406为了显示它，我只需运行:
plot(mydf)
但是我可以在 x 轴(year)上看到标签:
2000 2002 2004 2006 2008
如何告诉 plot/axis 只显示四个预期值:1999,2002,2005,2008 而不尝试推断序列?
解决方案
正如
I have this Data.Frame (mydf):
year total
1999 3967
2002 580
2005 5203
2008 2406
and to display it, I just run:
plot(mydf)
However I can see on the x-axis (year) the labels:
2000 2002 2004 2006 2008
How can I tell to plot/axis to display only the four expected values: 1999,2002,2005,2008 without trying to infer the sequence?
解决方案
As akrun suggest, you can use:
plot(mydf, xaxt = "n")
axis(1, at = mydf$year)
Data:
mydf <- structure(list(year = c(1999L, 2002L, 2005L, 2008L), total = c(3967L,
580L, 5203L, 2406L)), .Names = c("year", "total"), class = "data.frame",
row.names = c(NA, -4L))
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